Abstract: The invention is the new material, a ternary compound of cesium, silica, and titania, together with a method of making the ternary compound, cesium titanium silicate pollucite. More specifically, the invention is Cs.sub.2 Ti.sub.2 Si.sub.4 O.sub.13 pollucite which is a new crystalline phase representing a novel class of Ti-containing zeolites. Compositions contain relatively high Cs.sub.2 O and TiO.sub.2 loadings and are durable glass and ceramic materials. The amount of TiO.sub.2 and Cs.sub.2 that can be incorporated into these glasses and crystalline ceramics far exceeds the limits set for the borosilicate high level waste glass.

Abstract: Crystalline molecular sieves useful as colorants contain one or more chromophores of the class of the mono- or polyazo dyes that are devoid of acidic groups.

Abstract: The present invention is a composition, a synthesis of the composition and a method of using the composition for selectively adsorptively separating nitrogen from oxygen wherein the composition is a crystalline EMT with a Si/Al ratio less than 2.0 and a micropore volume determined in the sodium and/or potassium form of at least 0.20 cm.sup.3 /g and a lithium cation exchange of at least 80%, preferably including an intergrowth with a crystalline FAU structure, wherein the pure or intergrowth compositions have the chemical formula:M.sub.2/n O:X.sub.2 O.sub.3 :(2.0 to <4.0)SiO.sub.2wherein M=one or more metal cations having a valence of n, and X is selected from the group consisting of aluminum, gallium and boron, preferably aluminum.

Abstract: The present invention is a composition, a synthesis of the composition and a method of using the composition for selectively adsorptively separating nitrogen from oxygen wherein the composition is a crystalline EMT with a Si/Al ratio less than 2.0 and a lithium cation exchange of at least 80%, preferably including an intergrowth with a crystalline FAU structure, wherein the pure or intergrowth compositions have the chemical formula:(0.20-0.0)M.sub.2/n O:(0.80-1.0)Li.sub.2 O:X.sub.2 O.sub.3 :(2.0 to <4.0)SiO.sub.2wherein M=a metal cation other than lithium having a valence of n, and X is selected from the group consisting of aluminum, gallium and boron, preferably aluminum.

Abstract: Methods of preparing solid apatite particles using a microfluidizer, for use in medical diagnostic imaging such as magnetic resonance imaging, X-ray, and ultrasound. The desired apatite particles are synthesized, passed through a microfluidizer, and purified to remove excess base, salts, and other materials used to synthesize the particles. The microfluidizer causes two high pressure streams to interact at ultra high velocities in a precisely defined microchannel. Microfluidization of preparations causes small (<5 .mu.m) and uniform particles to be formed. Coating and purifying (especially by tangential flow filtration) the particles improves particle stability.

Abstract: Alkali metal aluminosilicate of the zeolite P type having the oxide formula M.sub.2/n O.Al.sub.2 O.sub.3.(1.80-2.66)SiO.sub.2.yH.sub.2 O, y being the water content, proves to have both excellent Calcium Effective Binding Capacity and Calcium Uptake Rate at temperatures below 25.degree. C. The present invention provides for the use of such a zeolite P as a low temperature calcium binder.

Abstract: This invention relates to novel crystalline molecular sieves having the pharmacosiderite structure and having germanium and M metals as framework elements. Optionally, titanium and silicon can also be a framework element. The M metals can be any metal which has octahedral coordination and has a valence of +2, +3, +4 or +5. Illustrative of these M metals are niobium, tin, antimony, aluminum, gallium and tantalum.

Abstract: Aluminosilicates in the form of P type zeolites are used as detergency builders and have a silicon to aluminium ratio not greater than 1.33, preferably above 0.9. These zeolites will usually have a calcium binding capacity of at least 150 mg CaO per gram of anhydrous aluminosilicate. A preferred form of the zeolite P has a silicon to aluminium ratio up to 1.15, and preferably above 0.9, with a tetragonally distorted cubic crystal structure. A process of the preparation of these zeolite P builders is described.

Abstract: Zeolites having a pore diameter comprised within the range of from 5 to 12 .ANG. are bonded with amorphous oligomeric silica, by dispersing them in an aqueous solution of silica and alkylammonium hydroxide, and submitting the obtained suspension to a quick drying.

Abstract: A method for producing crystalline synthetic faujasite of the zeolite "X" type is disclosed. The method comprises (a) separately preparing a sodium silicate solution and a sodium aluminate solution, (b) admixing the sodium silicate solution and the sodium aluminate solution at high shear until a mixture results having a ratio of sodium oxide to silica of 0.4:1 to 2:1, silica to alumina of 2.2:1 to 3.5:1, and water to sodium oxide of 20:1 to 70:1, (c) heating said mixture to a temperature of about 80.degree. to 120.degree. C. in the absence of any further mixing for a period of time sufficient to produce the desired crystalline faujasite of the zeolite "X" type, and (d) recovering said zeolite "X".

Abstract: Binderless zeolite L particles are prepared by a method in which particles are formed from silica and from 0 to 95 wt % preformed zeolite L crystallites, and the particles are thereafter reacted with an alkaline solution comprising a source of alumina to convert the silica binder to zeolite L. These particles may comprise cylindrical zeolite L crystallites with a mean diameter of at least 0.05 micron in a zeolite L matrix and may be used as catalyst. Also acyclic hydrocarbons are dehydrocyclized and/or isomerized by contacting them at a temperature of from 370.degree. C. to 600.degree. C. with this catalyst incorporating at least one Group VIII metal having dehydrogenating activity to convert at least part of the acyclic hydrocarbons into aromatic hydrocarbons.

Abstract: Crystalline 4A zeolites having high calcium ion exchange capacity, well adapted as builder materials for detergent compositions, are prepared by directly admixing an aqueous sodium silicate solution with a first aqueous sodium aluminate solution in a first reaction vessel to form a hydrogel therefrom, and transferring the hydrogel thus formed to a discrete crystallization zone and therein contacting such hydrogel with a crystallization-effecting amount of a second aqueous sodium aluminate solution to convert same into a crystalline 4A zeolite, and, advantageously, filtering, washing and optionally drying such crystalline 4A zeolite.

Abstract: The invention relates to a crystalline zeolite-like gallosilicate having an atomic ratio of Si/Ga in the outer crystalline surface that is not larger than the average Si/Ga ratio for the whole of the crystal. The invention also relates to a method of making such a gallosilicate comprising the hydrothermal crystallization of a strictly inorganic reaction mixture having the following molar ratios: SiO.sub.2 /Ga.sub.2 O.sub.3 .gtoreq.5; OH.sup.- /SiO.sub.2 =0.05-1.0; and H.sub.2 O/SiO.sub.2 =10-1,000. The invention further relates to the above-described method wherein said reaction mixture is prepared by adding an aged gel to a first mixture, the first mixture preferably having a composition with the following molar ratios: SiO.sub.2 /Ga.sub.2 O.sub.3 .gtoreq.5; OH.sup.- /SiO.sub.2 =0.05 to 1.0; and H.sub.2 O/SiO.sub.2 =20 to 100.

Abstract: Silica-bound extruded zeolites may be converted into binder-free zeolite aggregates by aging the zeolite in an aqueous ionic solution which contains hydroxy ions such that the initial molar ratio of OH-:SiO.sub.2 is up to 1.2 and which causes the silica binder to be converted substantially to zeolite of the type initially bound. Such extrudates have excellent mechanical strength and show advantageous properties such as adsorption comparable with non-extruded zeolite powder.

Abstract: A crystalline molecular sieve having a framework structure isomorphous with zeolite beta and containing Si and Ti, but essentially no framework Al, usefully catalyzes olefin epoxidation wherein hydrogen peroxide or an organic hydroperoxide is utilized as the oxidizing agent.

Abstract: Synthetic zeolite is stabilized to water by soaking it in an acid solution for a prolonged time. The stabilized synthetic zeolite does not exhibit alkalinity when it is dispersed in water at room temperature or elevated temperatures for 24 hours or more.

Abstract: Ammonium zeolites of extremely low alkali metal content are prepared by a process of potassium ion exchange followed by ammonium ion exchange. Zeolite X or zeolite Y that contain a significant amount of sodium are contacted with a potassium salt solution under conditions that provide a substantial exchange of potassium for sodium. The potassium enriched zeolite is then contacted with an ammonium salt solution so that the ammonium ion replaces the sodium and potassium ions. The resulting ammonium zeolite X or Y contains considerably less than 1% alkali metal calculated as Na.sub.2 O.

Abstract: The present invention is directed to an at least binary exchanged X-zeolite having lithium and zinc cations in a ratio of preferably 5% to 40% zinc and 50% to 95% lithium, wherein the sum of the lithium and zinc ion exchange is at least 65% of the exchangeable ion content. Theses adsorbents are useful in a process for separating nitrogen from gas mixtures containing nitrogen and less strongly adsorbed components such as oxygen, hydrogen, argon or helium.

Abstract: Methods of preparing solid apatite particles using a microfluidizer, for use in medical diagnostic imaging such as magnetic resonance imaging, X-ray, and ultrasound. The desired apatite particles are synthesized, passed through a microfluidizer, and purified to remove excess base, salts, and other materials used to synthesize the particles. The microfluidizer causes two high pressure streams to interact at ultra high velocities in a precisely defined microchannel. Microfluidization of preparations causes small (<5 .mu.m) and uniform particles to be formed. Coating and purifying (especially by tangential flow filtration) the particles improves particle stability.

Abstract: The present invention is directed to an at least binary exchanged X-zeolite having lithium and a divalent cation selected from the group consisting of cobalt, copper, chromium, iron, manganese, nickel and mixtures thereof in a ratio of preferably 5% to 50% of the divalent cation and 50% to 95% lithium. Theses adsorbents are useful in a process for separating nitrogen from gas mixtures containing nitrogen and less strongly adsorbed components such as oxygen, hydrogen, argon or helium.

Abstract: Stable suspensions of zeolite particulates, in water, well adapted for detergency applications, have a pumpable low viscosity and include an effective viscosity reducing amount of a siliconate and/or a siliconate derivative and, advantageously, a suspension stabilizer, e.g., an alkaline earth metal cation or a biogum polysaccharide.

Abstract: A novel microporous crystalline aluminosilicate designated DCM-2 is disclosed. The composition, as synthesized, contains lithium cations and is represented by the oxide composition: Li.sub.2 O.multidot.Al.sub.2 O.sub.3 .multidot.10SiO.sub.2. The lithium cations may be exchanged with hydrogen ions, and in the acid form the composition is useful as an adsorbent and as a catalyst for converting alkyl halides and alkanols to light hydrocarbons.

Abstract: A process is provided for the preparation of zeolites belonging to the faujasite structural class and exhibiting a Si:Al ratio higher than 1 in which a reaction mixture is first produced, which has a pH higher than 10 and contains water, a source of tetravalent silicon, a source of trivalent aluminum, a source of hydroxide ions in the form of a strong inorganic or organic base and a structuring agent ST so as to produce an aluminosilicate gel having the desired composition to permit its crystallization into a compound of the faujasite structural class. The gel obtained is kept at a temperature, pressure and for a sufficient period to effect the crystallization of the gel into a precursor of the zeolite consisting of the zeolite trapping the structuring agent ST in its cavities and the precursor is then subjected to a calcination to destroy the structuring agent and to produce the zeolite.

Abstract: The present invention is a rare-earth exchanged form of zeolite Q, which shows high thermal stability, and properties characteristic of a 12-ring zeolite structure.

Abstract: A process for converting noxious nitrogen oxides present in gaseous effluent to N.sub.2 comprising reacting the gaseous effluent with an effective amount of reducing agent, e.g., ammonia, in the presence of a catalyst structure comprising a film of interconnected zeolite crystals bonded to a substrate, said catalyst structure being characterized by a value r representing the mg of zeolite/cm.sup.2 of substrate surface and a value e representing the coating efficiency as mg of bonded zeolite/mg of YO.sub.2 initially in the synthesis mixture, wherein r is at least 0.5 and e is at least 0.05.

Abstract: This invention provides a three dimensional inorganic oxide structure comprising a myriad of cavities interconnected by holes having a narrow pore size distribution, in which the diameters of the cavities is in the range from 1 to 50 .mu.m and that of the holes in the range 1 to 10 .mu.m and in which the pore volume in the range 1 to 10 .mu.m is at least 2 cc/g and in which the inorganic oxide is selected from alumina, silica, titania, zirconia and mixtures thereof and a process for the preparation of such structures.

Abstract: Methods of preparing solid apatite particles using a microfluidizer, for use in medical diagnostic imaging such as magnetic resonance imaging, X-ray, and ultrasound. The desired apatite particles are synthesized, passed through a microfluidizer, and purified to remove excess base, salts, and other materials used to synthesize the particles. The microfluidizer causes two high pressure streams to interact at ultra high velocities in a precisely defined microchannel. Microfluidization of preparations causes small (<5 .mu.m) and uniform particles to be formed. Coating and purifying (especially by tangential flow filtration) the particles improves particle stability.

Abstract: A method for immobilizing waste chloride salts containing radionuclides such as cesium and strontium and hazardous materials such as barium. A sodalite intermediate is prepared by mixing appropriate amounts of silica, alumina and sodium hydroxide with respect to sodalite and heating the mixture to form the sodalite intermediate and water. Heating is continued to drive off the water to form a water-free intermediate. The water-free intermediate is mixed with either waste salt or waste salt which has been contacted with zeolite to concentrate the radionuclides and hazardous material. The waste salt-intermediate mixture is then compacted and heated under conditions of heat and pressure to form sodalite with the waste salt, radionuclides and hazardous material trapped within the sodalite cage structure. This provides a final product having excellent leach resistant capabilities.

Abstract: A process of synthesizing synthetic manganese oxide hydrates having various structures including hollandite and todorokite structure by hydrothermal synthesis. The products have a high degree of crystallinity, and thermal stability.

Abstract: Crystalline microporous solids, such as aluminosilicate zeolites or silica molecular sieves, are grown in a fluoride-containing, substantially non-aqueous medium to form crystals on the order 0.3-3 mm in size. This growth process involves preparing a mixture containing one or more nutrients capable of forming the crystalline microporous solid, such as a source of silica and a source of alumina; water in a controlled amount; a growth medium comprising hydrogen fluoride and a nitrogen-containing organic base, such as pyridine; and optionally an organic solvent and/or a structure-directing agent; and thereafter heating the resulting mixture for a time sufficient to produce the crystalline microporous solid.

Abstract: The reaction of premade gels with KOH in aqueous ammonia solvents yields highly crystalline but ultrasmall particulate, colloidal, products having major advantages in catalytic and sorption process.

Abstract: Process for the synthesis of a zeolite of MTT type in the absence of any nitrogenous organic agent, from a reaction mixture containing water, a source of tetravalent silicon and ethanol and optionally a source of trivalent aluminium and a source of hydroxide ions. The products obtained after heating the zeolite in air to 70.degree.-120.degree. C. or washing with water at 60.degree.-90.degree. C. are useful as selective organophilic adsorbents or as catalysts for the conversion of hydrocarbons.

Abstract: A new class of microporous compositions are described along with a process for preparing them and processes for using them. These compositions have a three-dimensional microporous framework structure of ZnO.sub.2, PO.sub.2 and M'O.sub.2 tetrahedral units, and an intracrystalline pore system. The M' metal is selected from the group consisting of magnesium, copper, gallium, aluminum, germanium, cobalt, chromium, iron, manganese, titanium and mixtures thereof. These molecular sieves are prepared by hydrothermal crystallization of a reaction mixture containing reactive sources of phosphorus, zinc, one or more M' metal, at least one alkali metal and water. This invention also relates to processes using these molecular sieves.

Abstract: In the hydrothermal synthesis of crystalline microporous molecular sieves from a reaction system containing an organic templating agent, it is found that removal of at least some of the organic reagent prior to the time the formation of crystalline product is complete results in an increased yield of the product. The removal of the organic reagent disrupts the equilibrium that is normally established in the reaction system at the selected crystallization temperature between product formation and product dissolution and shifts the reaction toward the formation of additional product before a new equilibrium can form.

Abstract: The invention includes a ZSM-5 composition and the preparation thereof which comprises treating ZSM-5 with solutions of salts of weak acids. The resulting ultrasmall crystal size ZSM-5 component has a sorption capacity for 2,2-dimethylbutane of at least 10 mg/g zeolite and a sorption time for 30% capacity zeolitic sorption at 60.degree. C. and P(2,2-dimethylbutane) of 60 torr, of less than about 4 minutes.

Abstract: A method of producing zeolite particles with reduced carbonate species so that the zeolite particles are ion exchangeable with biocidal metal ions.

Abstract: A zeolitic material with a crystalline structure of MFI type has a ratio of silica to alumina which is lower than 26, and is hydrothermally prepared without organic template reagents or seeding procedures. Crystalline structure is obtained by forming a mixture of a silicon dioxide source, an alkali metal hydroxide, an aluminum source and water, all reactants with the following molar ratios: ##EQU1## where M is an alkali metal, and reacting the mixture at a temperature from 160.degree. to 180.degree. C. for 40-80 hours. The material is characterized by X-ray diffraction, and has good cracking activity and improved selectivity for gasoline octanes.

Abstract: Zeolite L with flat basal planes, and reduced crystallite size is prepared in a synthesis modified by the addition of small amounts of additional metal such as magnesium, calcium, barium, cobalt, zinc, chromium, manganese or nickel. The addition of these metals also suppresses unwanted zeolite W formation even when the synthesis would otherwise form this zeolite.

Abstract: A process for preparing, in the absence of organic directing agent, a porous crystalline silicate having the structure of ZSM-5 having a sorption capacity for mesitylene of at least about 3 weight percent which comprises:a) providing a crystallization reaction mixture which includes a source of at least one component of crystalline silicate framework element, including silicon, wherein the solids content of said source in the crystallization reaction mixture is at least 35 weight percent;b) maintaining the crystallization temperature at less than about 250.degree. C.c) maintaining agitation conditions during crystallization sufficient to result in said crystal size;d) maintaining a mole ratio of OH.sup.- /SiO.sub.2 in the reaction mixture of at least about 0.11; ande) recovering porous crystalline silicate crystals.

Abstract: A bleaching particulate detergent composition comprises one or more detergent-active compounds, one or more detergency builders including a specific alkali metal aluminosilicate, maximum aluminum zeolite P (zeolite MAP), and a bleach system comprising sodium percarbonate. Zeolite MAP has a beneficial effect on sodium percarbonate stability.

Abstract: The object of the invention is a synthetic crystalline zeolite of the mordenite type characterized by:a) the following approximate general formula:Na.sub.2 O, Al.sub.2 O.sub.3, xSiO.sub.2where x is a number ranging from 9 to 30, andb) an X-ray diffraction diagram represented in table I of the description,c) a fluorine content ranging from about 0.005 to 2.0% by weight,and in that it has been synthetized in a fluoride medium.The invention also relates to a process for preparing said zeolite.This zeolite can notably be utilized in adsorption and in catalysis.

Abstract: Improved molecular sieves and processes for treatment of molecular sieves which permit use for separation of ethylene and silane without attending formation of ethylsilane. Such treatment includes treatment of sieves with silane at an effective temperature, pressure and time.

Abstract: The invention relates to sulfonic acid derivatives of crystalline porous materials having uniform pore size with an average pore size greater than 5 Angstroms or a Constraint Index of ten or less. In a preferred embodiment an acid treated crystalline porous material is reacted with a reagent to form the sulfonic acid derivative. The new products can be used as acid catalysts for acid catalyzed reactions. An example is the use of these materials in acid catalyzed etherification of methanol with isobutene.

Abstract: This invention relates to basic compositions comprising a zeolite and an alkali metal compound wherein the sum of the amount of the alkali metal in the compound plus any metal cation exchanged into the zeolite is in excess of that required to provide a fully metal cation-exchanged zeolite. This invention further relates to methods for preparing the instant compositions. In a preferred embodiment the instant compositions are prepared by impregnating a zeolite with a solution of an alkali metal salt wherein said alkali metal impregnated in the zeolite is in excess of that required to exchange out the ion exchangable sites present in the zeolite, drying the resultant impregnated material and then calcining the resultant composition.